Cell Differentiation

Question 1

3 places of cell differentiation

Answer 1

Cleavage of zygote + early embryogenesis

• Formation of trophoblast + embryoblast; formation of germ cells.
  2. Organ formation + differentiation of cells in tissues
• During embryonic development.
  3. After birth
• Haematopoiesis, epithelial cell renewal, spermatogenesis.

Question 2

Pluripotent stem cells undergo further specialization into:

Answer 2

multipotent progenitor
cells which include:

Hematopoietic stem cells (adults stem cells)- from bone marrowrbc,wbc,platelets, lymphoid pregenitor

Mesenchymal stem cells (adult stem cells)- from bone marrow- bone/fat cells

Epithelial stem cells (progenitor cells)- skin cells

Muscle satellite cells (progenitor cells)- muscle tissue

Question 3

Zygote to blastocyst journey

Answer 3

zygote-2 blastomeres-4 blastomeres-morula- blastocyst

Question 4

Blastocyst consists:

Answer 4

trophoblast (bigger segment) and embryoblast (smaller)